/**
 * FileName: OrderController
 * Author:   Xavier
 * Date:     2020/2/8 16:44
 * Description:
 * History:
 * <author>          <time>          <version>          <desc>
 * 作者姓名           修改时间           版本号          描述
 */
package com.jzsm.common.controller;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.jzsm.common.config.Global;
import com.jzsm.common.core.domain.AjaxResult;
import com.jzsm.common.core.page.PageDomain;
import com.jzsm.common.core.page.TableDataInfo;
import com.jzsm.common.core.page.TableSupport;
import com.jzsm.common.exception.BusinessException;
import com.jzsm.common.filter.Constant;
import com.jzsm.common.utils.DateUtils;
import com.jzsm.common.utils.ServletUtils;
import com.jzsm.common.utils.SqlUtil;
import com.jzsm.common.utils.StringUtils;
import com.jzsm.common.utils.file.FileUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.WebDataBinder;
import org.springframework.web.bind.annotation.InitBinder;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.beans.PropertyEditorSupport;
import java.util.Date;
import java.util.List;

/**
 * @author Xavier
 * @create 2020/2/8
 * @since 1.0.0
 */
public class BaseController implements Constant {

    /**
     * 响应请求分页数据
     * @return
     */
    protected <T> TableDataInfo<T> getDataTable(List<T> list, Page page) {
        TableDataInfo<T> rspData = new TableDataInfo<T>();
        rspData.setCode(0);
        rspData.setMsg("");
        rspData.setRows(list);
        rspData.setTotal(page.getTotal());
        return rspData;
    }

    protected <T> TableDataInfo<T> getDataTable(List<T> list) {
        TableDataInfo<T> rspData = new TableDataInfo<>();
        rspData.setCode(0);
        rspData.setMsg("");
        rspData.setRows(list);
        return rspData;
    }


    protected final Logger logger = LoggerFactory.getLogger(BaseController.class);

    /**
     * 将前台传递过来的日期格式的字符串，自动转化为Date类型
     */
    @InitBinder
    public void initBinder(WebDataBinder binder) {
        // Date 类型转换
        binder.registerCustomEditor(Date.class, new PropertyEditorSupport() {
            @Override
            public void setAsText(String text) {
                setValue(DateUtils.parseDate(text));
            }
        });
    }

    /**
     * 设置请求分页数据
     */
    protected Page startPage() {
        PageDomain pageDomain = TableSupport.buildPageRequest();
        Integer pageNum = pageDomain.getPageNum();
        Integer pageSize = pageDomain.getPageSize();
        if (pageNum == null) {
            pageNum = 1;
        }
        if (pageSize == null) {
            pageSize = 10;
        }
        String orderBy = SqlUtil.escapeOrderBySql(pageDomain.getOrderBy());
        return PageHelper.startPage(pageNum, pageSize, orderBy);
    }


    public String getCustomerId() {
        return getRequest().getParameter(CUSTOMER_ID_KEY);
    }

    /**
     * 获取request
     */
    public HttpServletRequest getRequest() {
        return ServletUtils.getRequest();
    }

    /**
     * 获取response
     */
    public HttpServletResponse getResponse() {
        return ServletUtils.getResponse();
    }

    /**
     * 获取session
     */
    public HttpSession getSession() {
        return getRequest().getSession();
    }

    /**
     * 响应返回结果
     *
     * @param rows 影响行数
     * @return 操作结果
     */
    protected AjaxResult toAjax(int rows) {
        return rows > 0 ? success() : error();
    }

    /**
     * 响应返回结果
     *
     * @param result 结果
     * @return 操作结果
     */
    protected AjaxResult toAjax(boolean result) {
        return result ? success() : error();
    }

    /**
     * 返回成功
     */
    public AjaxResult success() {
        return AjaxResult.success();
    }

    /**
     * 返回失败消息
     */
    public AjaxResult error() {
        return AjaxResult.error();
    }

    /**
     * 返回成功消息
     */
    public AjaxResult success(String message) {
        return AjaxResult.success(message);
    }

    /**
     * 返回失败消息
     */
    public AjaxResult error(String message) {
        return AjaxResult.error(message);
    }

    /**
     * 返回错误码消息
     */
    public AjaxResult error(AjaxResult.Type type, String message) {
        return new AjaxResult(type, message);
    }

    /**
     * 页面跳转
     */
    public String redirect(String url) {
        return StringUtils.format("redirect:{}", url);
    }

    //    将对象转换为json字符串,如果转换失败则返回空对象的json字符串
    public static String objToJson(Object obj) {
        String result;
        try {
            ObjectMapper mapper = new ObjectMapper();
            result = mapper.writeValueAsString(obj);
        } catch (JsonProcessingException e) {
            result = "{}";
        }
        return result;
    }


    public void download(String fileName) {

        try {
            if (!FileUtils.isValidFilename(fileName)) {
                throw new Exception(StringUtils.format("文件名称({})非法，不允许下载。 ", fileName));
            }
            String realFileName = System.currentTimeMillis() + fileName.substring(fileName.indexOf("_") + 1);
            String filePath = Global.getDownloadPath() + fileName;
            Boolean delete = true;
            HttpServletResponse response = getResponse();
            HttpServletRequest request = getRequest();
            response.setCharacterEncoding("utf-8");
            response.setContentType("multipart/form-data");
            response.setHeader("Content-Disposition",
                    "attachment;fileName=" + FileUtils.setFileDownloadHeader(request, realFileName));
            FileUtils.writeBytes(filePath, response.getOutputStream());
            if (delete) {
                FileUtils.deleteFile(filePath);
            }
            //return filePath;
        } catch (Exception e) {
            throw new BusinessException("下载文件失败");
            //log.hasError("下载文件失败", e);
        }
    }


}
